package com.chb.service;


import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {

    public String paymentInfo_ok(Integer id){

        return "线程池： "+Thread.currentThread().getName()+ "paymentInfo_ok,id: "+id;

    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "5000")
    })
    public String paymentInfo_Timeout(Integer id)  {

        Integer time = id;
//        int a = 10 /0;
        try {

            TimeUnit.SECONDS.sleep(time);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "线程池： "+Thread.currentThread().getName()+ "paymentInfo_ok,id: "+id +"耗时"+time+"S";

    }

    public String paymentInfo_TimeOutHandler(Integer id){

        return "线程池： "+Thread.currentThread().getName()+ "系统繁忙，请稍后再试，id: "+id +"\t"+ "(￣_￣|||)";


    }

    //==============服务熔断

    /**
     * 在10秒窗口期中10次请求有6次是请求失败的,断路器将起作用
     * @param id
     * @return
     */
    @HystrixCommand(
            fallbackMethod = "paymetnCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),// 时间窗口期/时间范文
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60")// 失败率达到多少后跳闸
    }
    )
    public String paymentCircuitBreaker(@PathVariable("id") Integer id)  {

     if (id < 0 ){
         throw new RuntimeException("******id不能负数");
     }
     String serialNumber = IdUtil.simpleUUID();
        return "线程池： "+Thread.currentThread().getName()+ "调用成功,流水号: "+serialNumber;

    }

    public String paymetnCircuitBreaker_fallback(@PathVariable("id") Integer id){

        return "id 不能为负数，清稍后再试~~~,id: "+id;

    }



}















